KTM SX 125 vs Rieju Marathon 125 SM Pro (2026)
Side-by-side spec comparison, pricing, and a plain-English breakdown of how the KTM SX 125stacks up against the Rieju Marathon 125 SM Pro. Numbers pulled from manufacturer spec sheets — click either bike for the full review.
Spec comparison
| Spec | KTM SX 125 | Rieju Marathon 125 SM Pro |
|---|---|---|
| Model year | 2026 | 2023 |
| Price | $8,449 | — |
| Engine | 124 cc | 125 cc |
| Weight | 92 kg | 121 kg |
| Seat height | 958 mm | 34 mm |
| Fuel capacity | 7.0 L | 1.7 L |
| Fuel type | petrol | petrol |
| Transmission | Manual, 6 speed, Chain | 6-speed |
| Front brakes | Hydraulic Disc | Single disc. Double piston caliper. Galfer wave disk. |
| Rear brakes | Hydraulic Disc | Single disc. Galfer wave disk. |
| Tires | Dunlop® GEOMAX MX34 80/100 R21 51M / Dunlop® GEOMAX MX34 100/90 R19 57M | 100/80-17 / 130/70-17 |
KTM SX 125 vs Rieju Marathon 125 SM Pro — which should you buy?
Picking between the KTM SX 125 and the Rieju Marathon 125 SM Pro usually comes down to the numbers you care about most. On paper, the KTM SX 125 brings its published horsepower in a 92 kg package, while the Rieju Marathon 125 SM Pro counters with its own power figure at 121 kg.
Our spec tables above highlight the winning number on each line. For the full rider-focused reviews including real-world fuel economy, service costs and available colors, click into either bike: